All Questions
1 question with no upvoted or accepted answers
2
votes
0
answers
332
views
Killing cohomology of structure sheaf by pullback along Frobenius and finite etale covers
On a smooth projective variety $X$ over a finite field, you can pullback any element in $H^1(X,\mathcal{O}_X)$ by a combination of Frobenius and finite etale cover so it gets killed. In order to prove ...